Talk to both of your friends find out what caused the conflict and see if you can fix it
Can you specify the “conflict in the world”?
I think the the phrase you are looking for is "ask questions".
These questions can take the form of a research question or a hypothesis (which is not a question but rather a claim that can be tested).
<span>What sparked it: Brazilians did not wanted to return to colonial status, after the country had been turned into United Kingdom of Portugal </span>
I'm not 100% sure, but i'm 99.9% sure that it is true.